Time and dating stamp



(No Model.) 4 Sheets-Sheet I.

w. s. JBWELL & A. OLQSTEVENS. TIME AND DATING STAMP.

No. 512,378. N Patented Jan. 9, 1894.

nmimm (No Model.) 4 Sheets-Sheet 2.

W. s. JEWELL & A. C. STEVENS.

TIME AND DATING STAMP- No. 512,378. Patented Jan. 9, 1894.

(N0 ModeL) 4 Sheets-Sheet 3. W. S. JBWELL & A. O. STEVENS. TIME ANDDATING STAMP.-

Patented Jan. 9, 1894.

(No Model.) 4 Sheets-Sheet 4.

W. S. JEWBLL & A. G. STEVENS. TIME AND DATING STAMP.

No. 512,378. Patented Jan.9,1894.

Mew. J/hi. L/M /W UNITED STATES PATENT OFFICE.

IVINFIELD SCOT JEWELL, OF INDIANAPOLIS, INDIANA, AND ALONZO C. STEVENS,OF DES MOINES, IO\VA.

TIME AND DATING STAMP.

SPECIFICATION forming part of Letters Patent No. 512,378, dated January9, 1894.

Application tiled July 11,1891. Serial No. 399.248. (No model.)

To ctZZ 1072 0721 it may concern.-

Be it known that we, WINFIELD SCOTT J nw- ELL, a citizen of the UnitedStates, and a resident of Indianapolis, in the county of Marion andState of Indiana, and ALONZO O. STEVENS, a citizen of the United States,and a resident of Des Moines, in the county of Polk and State of Iowa,have invented a new and useful Time and Dating Stamp, of which thefollowing is a specification.

Our invention relates to that class of devices technically known as timestamps, and has tor its object the provision of improved means forautomatically and intermittently rotating a series of type wheels, by anelectric current, the circuit carrying said current being opened orclosed by the action of a time keeper connected therewith.

Our invention consists in the combination in a time stamp, of anelectro-magnet, placed in circuit with a time keeper and a source ofelectrical supply, and an armature placed in juxtaposition to theelectro-magnet, and connected to a series of type wheels, which latterare so disposed relative to each other as that they may be rotatedindependently of, or in conjunction with each other at predeterminedtimes.

' Our invention consists further in the provision of means, whereby uponthe completion of onerevolution of the minutewheel, the meridian andhour wheels will be synchronously automatically advanced.

Our invention consists further in the provision of means whereby uponeach revolution of the day wheel the month wheel will be automaticallyadvanced.

Our invention consists further in the provision of means for skipping oroverleaping the twenty ninth, thirtieth, and thirty first days on theday wheel during the month of February, and the thirty first day on theday wheel during all thirty day months.

Our invention consists further in the details of construction andcombination, hereinafter set forth, pointed out in our claims, andillustrated by the accompanying drawings, in which Figure l is a sideView of the device, portions thereof being broken away to show therelative position of theinteriorparts. Fig. 2

is a front view of the device, portions thereof being broken away. Fig.8 is a representation of the impression made by the device. Fig. 4 is aside view of the minute wheel. Fig.5 is a side view of the year wheel.Fig. 6 is a side view of themeridian wheel. Fig. 7 is a View of one sideof the day wheel. Fig. Sis a view of that side of the day wheel oppositeto that shown in Fig. 7. Fig. 9 is a side view of the hour wheel. Fig.10 is atransverse sectional view between the minute and meridian wheels.Fig. 11 is a sectional view on the line XX of Fig. l. looking downward.Fig. 2 is a View of. the month wheel, showing part of the devices usedfor overleaping the unused days. Fig. 13 is a detail view of the gearwheels constituting part of the actuating mechanism. Fig. 14 is asectional view on the line YY of Fig. 10 or on the line Z Z of Fig. 7.Fig. 15, is a cross sectional view through all the type wheels. larged.

In the construction of the device as shown, the stamp comprises a base10,adapted to be fixed to a table or shelf 11, and an upwardly extendingcurved arm 12, which latter is formed integral with the base 10, and hasa plunger 13, mounted in the outer end thereof. This plunger 13, is ofcommon form and is held out of engagement with the type wheels, byyielding pressure interposed between a projecting portion of the plungerand a projecting portion of the arm 12, in a common manner. An openingis formed in the base 10 in the vertical plane of the plunger 13, and anumber of letters which designate the name and location of the personsusing the stamp and which print such name and location as designated bythe numeral 14 in Fig. 3, are arranged concentrically within the said0pen ing in a manner common to all stamps.

It is understood that suitable means are employed for inking the type,and as this in vention relates only to special means for periodicallyintermittently rotating the type wheels,designatiug the date and time,it has not been deemed necessary to illustrate all the parts, which arecommon to all stamps of this class.

A shaft 15 is so mounted within bearings Figs. 7, 8, 9, 10,12 and 13 areenin the base as to be incapable of rotation, and may be manuallywithdrawn longitudinally to remove and replace the type wheels about tobe described. On this shaft the year wheel 16, month wheel 17, and daywheel 18 are loosely mounted, as hereinafter clearly set forth. Asleeveformingasupplemental journal 19, Fig. 10 is loosely mounted on theshaft'15 between the year wheel 16 and the day wheel 18; and the hourwheel 20, and meridian wheel 21 are rigidly mounted on said sleeve. Theminute wheel 22 is loosely mounted on the sleeve19, between the wheelsand 21. Then it is said that the several wheels and sleeve are looselymounted upon the shaft and the wheel looselymounted upon the sleeve, itis to be understood that the bearings shown in Fig. 10 are to be used.Said bearing comprises notches in the face of the bore of the wheel, orsleeve beneath each character on said wheels, and spring actuated pins23 in the shaft and sleeve, which pins normally engage the notches asshown, but will readily yield to permit of the rotation of the wheelswhen power is brought to bear thereon.

An opening is made in the table or shelf 11, directly beneath the typewheels, and a bracket shelf 24 is fixed a short distance below the shelf11, on which shelf 24 the wheel actuating mechanism is supported.

The numeral 25 designates an electro-magnet,which is in circuit with abattery, or other source of electrical supply, designated as 26 and alsowith a time keeper 27, as about to be explained.

The positive lead 28 from the battery is connected to a rim 29, ofconductive material, which surrounds the dial of a clock or other timekeeper 27. This rim has twelve lugs or contact points 30 projectingoutward therefrom, which are adapted to be engaged by the minute hand 31of the time keeper in its travels, thereby causing the said minute handto perform the function of a contact finger. These contact points 30 areplaced at regular intervals on the rim, and in such a manner relative tothe dial of the time keeper as that some one of them will be engaged bythe hand 31, every five minutes, counting forward from a given hour. Thehand 31, is an electrical conductor as is also its pivot, which pivot isconnected by the conducting wire 32, to the binding post 33, whichbinding post is connected to the electro -magnet 25. The other end ofthe electro-magnetic coil 25 is connected to a binding post 34, whichlatter 7 is connected with .the battery 26, thus completing the circuit.The electro-magnet is mounted on a wooden base 35 in main engaging levermechanism consisting of an actuator 36, the lower end of which ispivoted to the base 35, from whence said actuator extends upwardlythrough a guideway in the frame 37, which latter is also fixed to thebase 35, and an armature 36, of common form fixed on the actuator 36 injuxtaposition to the magnet 25, which latter when energized causes saidactuator 36 of the main engaging lever mechanism to rotate the minutewheel 22. The lateral movement of the actuator 36 is restricted by theinwardly projecting pins 38, which are fixed in the frame 37 on eachside of said actuator. When the electric circuit is broken, the actuator36 is drawn away from the magnet,by the resilience of a spiral spring39, one end of which is fixed to the actuator 36 and the opposite end isfixed to an adjusting screw 40, which latter is inserted in a screw seatin the frame 37, as clearly shown in Fig. 1.

The minute wheel 22, has its periphery divided into eleven spaces andbears numerals 5, 10, 15, and so on to 55. The place for the numeral isleft blank, thereby producing a space between 55 and 5 which is twice asgreat as any of the other spaces. A ratchet 41 is fixed on the side ofthe wheel 22, each tooth of which ratchet is on a radial line betweenthe center of said wheel and a printing numeral on the peripherythereof, except that tooth of the ratchet adjacent to the numeral 30.The space between that tooth of the ratchet adjacent to the numeral 30and that tooth adjacent to the numeral 35 is somewhat longer than theother spaces for reasons which will hereinafter appear. This ratchet 41is engaged by the upper end of the actuator 36 upon each forwardmovement of the armature 36 and the wheel 22 is thereby moved forwardone notch or until the actuator 36 comes in contact with one of thefixed pins 38.

The locking mechanism consisting of a bent lever 42 (Figs. 10 and 14)fulcrumed in a perforation in the wheel 22 has one of its endsprojecting from the side of said wheel slightly in advance of the-"ratchet tooth adjacent to the printing numeral 30 in such a manner asto be engaged by the actuator 36, and pressed against the said ratchettooth, bywhich-movement the opposite end of said lever 42 is thrownoutward and caused to engage a notch 43 in the hour wheel 20, and thusrotate said hour wheel a short distance.

When the pressure of the actuator 36 isremoved from the lever 42, saidlever will be caused to resume its normal position by the resilience ofa spring 42 (Fig. 14).

The hour wheel 20 has its periphery divided into twenty four spaces andbears numerals from 1 to 12 inclusive on each half thereof with which toprint the day.

The meridian wheel 21 has its peripherydivided into twenty four spacesand bears the letters M. P. M. A. M. so disposed as to print that timerelative to the meridian as desired. By reason of the hour wheel andmeridian wheel being both rigidly secured to the sleeve 19, upon therotation of said hour wheel, as described, the meridian wheel will alsobe rotated, thus always retaining its relative position to the said hourwheel.

The day wheel 18 has its periphery divided into thirty one equal spaces,and bears numerals from 1 to 31 inclusive, with which to print the day.

A ratchet 4A is fixed on one side of the day wheel, the teeth of whichratchet coincide with the numerals on the periphery of said wheel withthe exception that the space between that ratchet tooth adjacent to thenumeral 17 and that tooth adjacent to the numeral 18 is somewhat longerthan the other spaces for reasons that will hereinafter be set forth.

The numeral 45 designates a wheel having a ratchet on one side thereof,which wheel is rigidly mounted on one end of the shaft 46, which shaftis journaled in the frame 37. The ratchet on the "wheel a5 is acted uponby a spring pawl 47, which pawl is fixed to the actuator 36 and isoperated by the movement of said actuator. This ratchet on the wheel 45has twelve teeth, and a pinion 48 having six teeth, is rigidly mountedon the shaft 4:6 opposite to the wheel 45, which pinion meshes with thegear wheel 4L9, having one hundred and forty four teeth. The gear wheel49 is journaled on a pivot fixed to the frame 3'7. An abutment 50projects from one side of the wheel 49 which abutment engages the lowerend of a lever 51 upon each revolution of said wheel. The lever 51 isfulcrumed on the frame 37 in an approximately vertical position and theupper end thereofis made of thin steel and is curved rearward to a pointof engagement with the ratchet 1 1 on the wheel 18 in such a manner thatafter being acted upon by the pin 50 on the wheel 49 and advancing thewheel 18 one notch, it will yield sufficiently to permit of its beingbrought back and into engagement with the following tooth on saidratchet. The lower end of said lever 51 is made of thin spring steel inorder thatit may yield to permit the passage of the abutment 50 on thewheel 49 at a time when the wheel 18 is looked, as will shortly appear.The full stroke of the lever 51 would advance the wheel 18 at a distanceequal to four notches on the ratchet 44B and is limited thereto by pins52 which project inward from the side of the frame 37 as clearly shownin Fig. l.

Theratchet wheel 45, shaft 46, spring pawl 47, pinion a8, gear wheel 49,abutment 50 and lever 51 together comprise auxiliary engaging levermechanism operated by the movement of the main engaging lever mechanismto ad vance the day wheel.

A spiral spring is fixed at one end to the lever 51 at a point above thefulcrum of said lever, and at the other end to an adjusting screw 54seated in the frame 37, which spring normally holds said lever inengagement with the ratchet le and pulls said lever back after eachintermittent advancement of the wheel 18.

On the side of the day wheel 18 opposite to the ratchet 44; are fixed anumber of pins 55 corresponding in number with the teeth of saidratchet, and directly opposite thereto. A detent 56 having a hook on itsupper end is fulcrumed on the base 10 in the rear of the space betweenthe wheels 17 and 18, and is held in engagement with some one of thepins 55 by means of a spring 57 fixed to the base 10, and impingesagainst the back of the detent 56, (Fig. 1.) A wire 58 connects theupper end portion of the lever 51 with the lower end of the detent 56and disengages the hook on the detent from the pin 55, when the pin 50engages thelever51, thus permitting the advancement of the wheel 18.When the pin 50 on the wheel 49 has passed the lever 51, the spring 53pulls said lever backward and permits thehook on the detent to engagethe pin 55, thus permitting the wheel 18 to be advanced one notch of theratchet 44 at each revolution of the wheel 49, or a space correspondingto one day.

The day wheel 18 has three fingers 59, 60, and 61, pivoted to the sidethereof in the spaces between the pins 55 which are adjacent to theprinting numerals 5 and 6 6 and 7, '7 and S, which designate and printthe day. On the adjacent side of the month wheel 17, is fixed a seriesof lugs 62 and 63. The lug 62 is fixed rigidly on the wheel opposite tothe space occupied bythe printing symbol designating the month of May,the center of said lug being directly opposite to said symbol. The faceof said lug adjacent to said printing symbol is convex and of such alength as that when the fingers 59, 60, and 61, on the day wheel arebrought opposite thereto, said lug will exceed in length the spaceoccupied by said fingers. Said lug is located in a circle concentricwith and within the circle occupied by said fingers and is in such aposition as that upon the rotation of the wheel 18, said fingers willengage the convex surface of the lug 62 and be pressed outward untiltheir free ends occupy and fill the space between the pins adjacent towhich they are located and prevent the entrance within those spaces ofthe hook on the lever 56. The lugs 63 are located adjacent to theprinting numerals designating respectively the months of July,September, De-

' cemberandFebruary. 'lhelugs63arecurved,

and are larger at one end than at the other. They are pivoted near theircenters to the wheel 17, and the larger end thereof is pressed towardthe perimeter of said wheel by springs 64; which springs are heldbetween pins fixed to said wheel, and impinge against the back of thelarger end of said lugs.

In the advancement of the wheel 18, the wheel 17 being temporarilystationary, the finger 59 between the printing numerals 5 and 6, and thefinger will pass the small end of that lug 63 which is adjacent theretoand the finger 59 will impinge against and press downward the large endof said lug, thereby causing the small end of said lug to press thefinger 61 outward between the pins 55 which are adjacent to the printingnumerals 7 and 8, thus preventing the engagement with the pin 55opposite to the printing numeral 8, of the hook on the lever 56, and inthis manner each of the lugs 63 are acted upon successively andprogressively thus providing means for skipping or overleapiug thethirtyfirst day on the day wheel in each thirty day month.

Tripping mechanism similar to that mounted within the minute wheel 22,consisting of a bent lever 65, is fulcrumed in a perforation in thewheel 18, one end thereof projecting from the side of said wheelslightly in advance of the ratchet tooth adjacent to the printingnumeral 16 in such a manner as to be engaged by the lever 51 and pressedagainst the said ratchet tooth thereby throwing the opposite end of saidlever outward and causing it to engage one of the notches 66 in the faceof the month wheel 17, and thus rotate said month wheel a short distanceand bring the next printing numeral thereon into position. When thepressure of the lever 51 is relaxed the lever 65 will be acted upon by aspring 42 (Fig. 14) and caused to resume its normal position.

The ear wheel 16 has been arran edfor manual actuation and adjustment,to avoid compounding the operating mechanisms.

The-operation of our improved device is as follows: In the advancementof the minute hand 31 of the time keeper27, said minute hand contactswith the first of the series of lugs 30, arranged upon the rim 29, thusestablishing electrically a circuit with the source of supply 26 and theelectro-niagnet 25, which latter then attracts the armature 36, andcauses the upper end of the actuator 36 to describe an are, said upperend engaging that tooth of the ratchet 41 on the minute wheel 22opposite the numeral 30 on the periphery of said wheel thus rotatablyadvancing said wheel so that the numeral 5 on the periphery thereof isbrought into position to impress that figure upon the object beingstamped, and in the further advancement of the minute hand 31, thecircuit is broken and the actuator 36 retracted by means of the spring39, the printing numeral 5 remaining in position until the second one ofthe series of lugs 30 completes the circuit with the minute hand 31, andenergizing magnet 25, vibrating the actuator 36 the upper end of whichengages that tooth of the ratchet opposite to the numeral 35, thisoperation being successively repeated until all the numerals on theperiphery of the minute wheel from 5 to 55 inclusive have beensuccessively brought into an operative position so that at any timethere may be impressed upon an object during the lapse of the hour thedesignation of each successive five minute interval. The actuator 36having successively engaged. each of the teeth of the ratchet 41, andthe numeral 55 on the periphery of the minute wheel having been broughtinto position,'in the further vibration of the upper end of the actuator36 the latter engages the outer end of the bent lever 42, fulcrumed inthe minutewheel 22, and

pressing the said end of the bent lever 42.

successively and automatically repeated in the .continued rotation ofthe minute wheel. The meridian wheel 21 together with the hour wheelbeing rigidly mounted on the supplemental journal, it follows that amovement of rotation of the hour wheel will cause a correspondingmovement of the said meridian wheel, which latter bears upon itsperiphery the letters A. M., repeated successively eleven times, and theletters P. M., repeated twelve times, together with the letter M., sothat the meridian proper, and time .relative thereto may be properlydesignated conjunctively with the hour wheel. The day wheel 18 isactuated rotatively by the auxiliary engaging lever mechanism asfollows: The spring pawl 47 carried on and moved .by the actuator 36engages and rotates the ratchet wheel 45 hav- I ing the twelve teeth,one entire revolution each hour, the pinion 48 having six teeth beingalso rotated correspondingly. The gearwheel 49 having one hundred andforty four teeth meshing with the pinion having six teeth, it followsthat it necessitates two hundred and eighty eightvibrations of theactuator 36 in order to efiect a complete revolution of the gear wheel49, said number of vibrations corresponding to the number of five minuteintervals in each day, which when this complete revolution is eifectedcauses the abutment 50 to engage the lower end of lever 51, which latterengages the teeth of the ratchet 44 of the day wheel 18 and advances thesame successively to print the day of the month. The normal tendency ofthe lever 51 to advance the day wheel 18, four notches is limited in thecase of those months having thirty-one days to a movement equal to onespace between the numerals on the periphery of said wheel, by means ofthe normal tendency of the detent 56 to engage the pins 55, which whenany one is engaged af+ fords a resistance which causes the lower end ofthe lever 51 to spring and permit the passage of the abutment 50 in thecontinued re.- tation of the wheel 49, by said lower end. The monthwheel 17 is advanced by means of the tripping mechanism carried by theday wheel, which mechanism is the same as that mounted in the minutewheel 22, and is acted upon the lever of the said tripping mechan- ISIIIto engage the perforations 60.

The operation of the mechanism for automatically skipping thethirty-first day in thirty day months, as well as the thirty-firstthirtieth and twenty-ninth days in the month of llebruar has beenheretofore fully de-- scrlbed in connection with the particulardescription of the parts. It will be observed that the hon rand meridianwheels are arranged upon a common sleeve, and that the minute wheel isinterposed between them and journaled on the said sleeve, this relativearrangement of the wheels being necessary in order that the reproductionof the stamp may read as shown in Fig. 3.

Having thus describedour invention, what we claim as new therein, anddesire to secure by Letters Patent of the United States therefor, is-

1 A time and dating stamp comprising a series of type bearing wheelsdesignating the year, month, day, hour, meridian and minute, an actuatedpawl intermittently engaging snocessive notches on the minute wheel androtatlng the same, locking mechanism, which when acted upon by the saidpawl at predetermined intervals locks together the hour and meridianwheels, thereby rotating the said hour and meridian wheels in unison.

2. A time and. dating stamp comprising a shaft mounted in a suitablebase in juxtapos1t1on to an impression device, year, month and daywheels rotatably mounted on said shaft, hour and meridian wheels looselymounted on supplemental journal, a minute wheel loosely mounted on thesaid supplemental journal, main engaginglever mechamsm operated by anelectrounagnet to advance the minute wheel, auxiliary engaging levermechanism, and gear mechanism between said main engaging lever mechanismand said auxiliary engaging mechanism, which gear mechanism when actedupon by the main engaging lever mechanism aforesaid advances the daywheel, and locking mechamsms carried respectively by the min ute and daywheels, which when respectively acted upon by the main and auxiliaryengagmg lever mechanisms synchronously rotates each adjacent wheel,

8, In a time and dating stamp, the combination of a series of typebearing wheels arranged in independently operating sets, one of saidsets comprising a day and a month wheel, the axis of which set serves asa support for the axis of the other set composed of the hour, meridianand minute wheels, an electro-magnet, main engaging lover mechanismactuated by the magnet to operate the min ute wheel, auxiliary engaginglever mechanism to operate the day wheel, gear mechanism between themain engaging lever mechanism and the auxiliary lever engagingmechanism, and locking mechanisms carried by the min ute and day wheelsrespectively, which looking mechanisms when acted upon by the aforesaidlever mechanisms advances the adjacent wheel of each set respectively.

a. The combination in a time and dating stamp, of a series of typebearing wheels arranged in sets in juxtaposition to an impressiondevice, one of which sets comprises minute, hour and meridian wheels,main engaging lever mechanism actuated by an electromagnet to operatethe minute wheel, gear wheels operated by said mechanism, and auxiliaryengaging lever mechanism acted upon by said gear wheels and acting uponand advancing the remaining set of type bearing wheels, which latter setcomprises a day and month wheel.

5. In a time and dating stamp, two independently operating sets of typebearing wheels, a common axial support for all of said wheels, one ofsaid sets comprising a day and month wheel and the remaining setcomprising a minute, hour and meridian wheel, the latter set beingmounted directly upon a supplemental journal, an electro-maguet, mainengaging lever mechanism operated by said electromagnet engaging androtating the minute wheel of one set, auxiliary engaging levermechanism, gear mechanism between said main engaging lever mechanism andthe auxiliary engaging lever m echanism,by which the latter is operatedto rotate the day wheel of the remaining set, locking mechanisms carriedby the minute and day wheels respectively and respectively acted upon bythe main engaging lever mechanism and the auxiliary engaging levermechanism to cause them to engage at intervals the adjacent wheel orwheels of each set respectively and advance the same, leads between saidelectromagnet, a time keeper and a source of electrical supply, andmeans by which said time keeper automatically and at predeterminedintervals progressively and intermittently establishes a circuit betweenthe source of electrical supply and the said electro-magnet.

6. In a time and dating stamp a minute, hour and meridian wheel mountedupon a common journal or shaft, the minute wheel being loosely mountedthereon and adapted to rotate independently, the hour and meridianwheels being rigidly mounted upon said shaft and therefore adapted to beoperated conj unctively, main engaging lever mechanism rotating theminute wheel, locking mechanism carried by said minute wheel engaging atpredetermined intervals the adjacent wheels to advance the same, andmeans for operating said locking mechanism,

'7. In a time and dating stamp, a plurality of type bearing wheelsarranged in two independently operating sets, one of said setscomprising a day and month wheel, and the re maining set comprising theminute, hour and meridian wheels, main engaging lever mechanismoperating the minute wheel, auxiliary engaging lever mechanism, gearmechanism Ill) between the main engaging lever mechanism and the saidauxiliary engaging lever mechanism acting upon the latter to cause it tooperate the day wheel of the remaining set, and locking mechanismscarried by the minute and day wheels respectively, which lockingmechanisms upon one revolution of said wheels engages an adjacent wheelor wheels of its respective set, and imparts thereto a rotary motionintermittently and progressively,

together with means for actuating the looking mechanisms.

8. In a time and dating stamp the combination of ashaft mounted in asuitable base, and in juxtaposition to an impression device, a day wheelrotatably mounted on said shaft, a pawl acting upon said day wheel andadapted to move the same more than one notch at each actuation thereof,pins fixed upon one side of said day wheel at regular intervals ofseparation, and a detent pivoted upon a suitable support and adapted toengage the said pins at irregular predetermined intervals and limit theadvancement of the day wheel upon each successive actuation of saidpawl.

9. In a time and dating stamp the com bination of a shaft mounted ina'suitable base in juxtaposition to an impression device, month and daywheels rotatably mounted on said shaft, mechanism for actuating saidwheels, ratchet teeth on the day wheel, pins corresponding in numberwith said ratchet teeth fixed to one side of said day wheel at regulardistances of separation, a detent pivoted on a suitable support andadapted to engage said pins and lock the day wheel, and fingerspivotally mounted on said day wheel and adapted to be acted upon toclose the space or spaces between two or more of said pins and preventthe engagement of the detent with said pins, together with auxiliarymain engaging lever mechanism acting upon the day wheel to advance thesame four steps at a time.

10. A time and dating stamp comprising a shaft mounted in a suitablebase and in juxtaposition to an impression device, month and day wheelsrotatably mounted on said shaft, mechanism for actuating said wheels,pins corresponding in number with ratchet teeth on the day wheel, fixedto one side of said day wheel at regular intervals of separation, meansby which said day wheel is advanced four steps at a time, a detentpivoted on a suitable support and adapted to engage the said pins andlock the day wheel, fingers pivotally mounted on said day wheel, lugsfixed to the month wheel, which lugs when engaged by said fingers willcause said fingers to close one or more of said spaces between the saidpins, which lugs are in the radial line of the printing symbolsdesignating the months of February, May, July, September and December,respectively.

11. A time and dating stamp comprising a shaft mounted in a suitablebase and in juxtaposition to an impression device, year, month and daywheels rotatably mounted on said shaft, a sleeve rotatably mounted onsaid shaft, hour and meridian wheels rigidly mounted on said sleeve, aminute wheel rotatably mounted on said sleeve, a ratchet fixed tosaidminute wheel, mainengaging lever mechanism operated byan electro magnet,and periodically engaging said ratchet and advancing said minute wheel,locking mechanism carried by said minute wheel periodically acted uponby the said main engaging lever mechanism, and caused to engage theadjacent type wheel and advance the same synchronously with the advancement of the minute wheel, therebyimparting to the sleeve anintermittent rotary movement, a ratchet wheel acted upon by said mainengaging lever mechanism, a gear wheel having six teeth mechanicallyconnected to said ratchet wheel and operated thereby, a gear wheelhaving one hundred and forty four teeth meshing with the aforesaid gearwheel, a lever fulcrumed on a suitable support acted upon by said largergear wheel, aratchet fixed to said day wheel periodically acted upon bysaid latter lever whereby an intermittent rotary movement is imparted tosaid day wheel, and locking mechanism carried by said day Wheel andperiodically acted upon by the lever in actuating said ratchet to engagewith and advance the month wheel synchronously with the advance of theday wheel.

12. A time and dating stamp comprising a shaft mounted in a suitablebase and in juxtaposition to an impression device, year, month, and daywheels rotatably mounted on said shaft, a sleeve rotatably mounted onsaid shaft, hour and meridian wheels rigidly mounted on said sleeve, aminute wheel rotatably mounted on said sleeve, a ratchet fixed to saidminute wheel, main engaging lever mechanism operated by anelectro-magnet and engaging with said ratchet and periodically impartingto said minute wheel a rotary motion, locking mechanism carried by saidlatter wheel, which locking mechanism is acted upon by said mainengaging lever mechanism and caused to engage the adjacent wheel,thereby imparting to the sleeve an intermittent rotary movement, aratchet fixed to the day wheel,a lever fulcrumed on a suitable support,gear wheels operated by the aforesaid main engaging lever mechanism,intermittently engaging the said lever and causing the same to engagethe ratchet on said day wheel, thereby intermittently rotating said daywheel, detent mechanism engaging with said day wheel to lock the same,means for releasing said detent mechanism to render the same momentarilyinoperative, and locking mechanism carried by the day wheel, whichlocking mechanism is periodically acted upon by the lever actuating saidday wheel, thus causing said locking mechanism to engage the month wheeland intermittently and progressively advance the same.

13. In a time and dating stamp, devices for overleaping the twentyninth, thirtieth and thirty first days on the day wheel during the monthof February, and the thirty first day on the day wheel during all thirtyday months comprising an electro-magnet, main engaging lever mechanismsoperated by said electromagnet, a plurality of type bearing wheels,auxiliary engaging lever mechanism actuated by the main engaging levermechanism by means of intermediate gear mechanism, a plurality of pinscarried by the day wheel coincident with the symbols designating thedays of the month, said auxiliary engaging lever mechanism being adaptedto normally tend to rotate the day wheel a distance equal to four spacesoccupied by the printing symbols thereon, a detent normally tending toengage successively each of said pins which is disengaged by theauxiliary engaging lever mechanism to permit the advancement of the daywheel, lugs on the month wheel coincident with the symbols designatingthe months of February, May, July, September and December,pivotedfingers secured upon the day wheel in such a position as to be actedupon by said lugs whereby the detent is withheld from engagement withthose pins coincident with the symbols designating the sixth, seventhand eighth days of the month on the day wheel.

ii. In a time and dating stamp, devices for overleaping the twentyninth, thirtieth and thirty first days on the day wheel during the monthof February, and the thirty first day on the day wheel during all thirtyday months, comprising day and month wheels, mechanism for periodicallyactuating said wheels, a plurality of pins on the day wheel, a detentnormally tending to engage said pins, lugs on the month wheel, andpivoted fingers acted upon by said lugs, whereby said detent is withheldfrom engagement with one or more of said pins, together with means bywhich a four step movement is imparted to the day wheel.

15. In a time and dating stamp, devices for conjunctively operating theminute and hour wheels comprising a bent lever fulcrumed within theminute wheel, lever mechanism acting upon said bent lever whereby thelatter is caused to periodically engage said hour wheel and periodicallyand progressively rotate the same.

16. In a time and dating stamp devices for conjunctively operating thehour, meridian and minute wheels, comprising a bent lever fulcrumedwithin the minute wheel, lever mechanism acting upon said bent leverwhereby the latter is caused to periodically engage the adjacent wheel,and rigid connections between said hour and meridian wheels.

17. In a time and dating stamp devices for conjunctively operating thehour, meridian and minute wheels, comprising a bent lever fulcrumedwithin the minute wheel, which minute wheel is mounted upon an auxiliaryjournal which forms a rigid connection between the hour and meridianwheels, and lever mechanism acting upon said bent lever, whereby thelatter is caused to periodically engage and progressively advance theadjacent wheel.

18. In a time and dating stamp, devices for operating the type bearingwheels, comprising a bent lever operated bya motor, an auxiliary lever,an actuator wheel having aratchet on one side and rotating a pinion, agear wheel meshing with said pinion, an abutment on said wheel which inits traverse actuates the auxiliary lever, and a spring pawl engagingsaid ratchet face.

19. In a time and dating stamp, a journal, hour and meridian wheelsmounted upon said journalindependently of each other,a minute wheelmounted upon said journal between the hour and meridian wheels, whichmeridian wheel bears upon its periphery the symbols designating the timerelative to the meridian and the meridian.

WINFIELD SCOTT .IEIVELL. ALONZO O. STEVENS.

Witnesses as to the signature of Winfield Scott Jewell:

W. F. MILHOLLAND, EDW. FOWLER.

Vitness as to the signature of Alonzo 0.

Stevens:

S. 0. SWEET, C. O. BULKLEY.

